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Orion Observer 134mm Equatorial Reflector Telescope

SKU : OR-52987

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  • This wonderfully capable equatorial reflector telescope gives beginning stargazers an exciting look at the many jewels of the night sky
  • Its 134mm (5.3") parabolic mirror and 650mm focal length provide sharp, wide-field views of the lunar surface, Saturn's rings, and deep-sky gems like the Lagoon and Orion nebulas
  • The sturdy EQ3-class equatorial mount and aluminum tripod is a big upgrade from the mounts that comparable telescopes on the market come with
  • Two quality 1.25" Plossl eyepieces are included: a 25mm for low-power views at 26x, and a 10mm for getting in tight at 65x. You also get a 6x30 finder scope
  • Nicely portable: the optical tube can be removed from the mount quickly via the dovetail mounting system and carried separately

Product Details

  • Whether you're interested in solo stargazing or have a family eager to discover "what's up" in the night sky, the Orion Observer 134mm EQ Reflector Telescope will give you a solid start on your astronomical adventures.

    With its 134mm (5.3") parabolic primary mirror and 650mm focal length (f/4.9), this telescope provides a wide field of view for bright, sharp images of the lunar surface, Saturn's rings, and deep-sky all-stars like the Lagoon and Orion nebulas and the Andromeda galaxy, just for starters. There's myriad more objects this capable backyard telescope can reveal for the serious beginning astro enthusiast.

    The Observer 134mm EQ Reflector Telescope's optical tube is supported on a beefy EQ3 class equatorial mount with adjustable aluminum tripod and roomy accessory tray. With its Vixen-style dovetail mounting saddle, you can pop the optical tube on or off quickly, for easy setup and transport. The optical tube is cradled in a pair of felt-lined tube rings, which can be quickly loosened to allow you to rotate the tube for comfortable focuser orientation depending on where the tube is pointed. Dual slow-motion cables let you track objects manually to keep them centered in the eyepiece's field of view.

    And speaking of eyepieces, two quality 1.25" Plossl eyepieces are included: a 25mm for low-power views at 26x magnification, and a 10mm for getting in tight at 65x. Both eyepieces feature anti-reflection coatings for exceptional light transmission and their barrels are threaded to accept optional Orion filters. The precision rack and pinion focuser lets you dial in the perfect focus every time. Rounding out the accessory set is a 6x30 crosshair finder scope to help you locate and center your target of interest.

    The whole setup weighs just over 18 lbs. That's hefty enough to provide steady images even in a breeze, but light enough to comfortably carry out to the back yard when the stars come out.


    • Best for viewing: Brighter deep sky
    • User level: Beginner
    • Optical design: Reflector
    • Optical diameter: 134mm
    • Focal length: 650mm
    • Focal ratio: f/4.8
    • Optics type: Parabolic
    • Glass material: Soda-lime plate
    • Eyepieces: Plossl 25.0mm,10.0mm (1.25")
    • Magnification with included eyepieces: 26x, 65x
    • Resolving power: 0.86arc*sec
    • Lowest useful magnification: 19x
    • Highest useful magnification: 268x
    • Highest theoretical magnification: 268x
    • Limiting stellar magnitude: 13.3
    • Finder scope: 6x30
    • Focuser: 1.25" Rack-and-pinion
    • Secondary mirror obstruction: 40mm
    • Secondary mirror obstruction by diameter: 30%
    • Secondary mirror obstruction by area: 22%
    • Mirror coatings/over-coatings: Aluminum & Silicon Dioxide
    • Mount type: Equatorial
    • Dovetail bar system: Yes
    • Motor drive compatibility: Clock drive sold separately
    • Setting circles: Yes
    • Polar-axis scope: Not available
    • Counterweights: One 4 lb.
    • Tube material: Steel
    • Tripod material: Aluminum
    • Counterweight bar length: 8 in.
    • Diameter of counterweight shaft: 13mm
    • Height range of mount: 37.50 in. - 69.50 in.
    • Length of optical tube: 24.0 in.
    • Weight, optical tube: 6.7 lbs.
    • Weight, mount/tripod: 12.8 lbs.
    • Weight, fully assembled: 19.5 lbs.
    • Other features: Dual slow-motion cables, dovetail saddle for easy attach/detach of OTA, center-marked primary mirror for collimation
  • specifications

    Aperture134mm (5.25")
    Dawes Limit0.86 arcseconds
    Focal Length650mm
    Focal Ratiof/4.8
    Head DesignEquatorial
    Highest Magnification268x
    Secondary Obstruction40 mm/ 2.5 inches
    Tube Weight6.7 lb
  • included items

    • Optical tube assembly
    • EQ mount
    • Aluminum tripod
    • Accessory tray
    • 6x30 finder scope with bracket
    • 25mm Plossl eyepiece, 1.25"
    • 10mm Plossl eyepiece, 1.25"
    • Counterweight
    • Counterweight shaft
    • Slow-motion cables (x2)
    • Tube ring and dovetail mounting bar assembly

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